Skip eventd-related testing for eventd disabled on slim image

[byu343]

Description of PR

Summary: Skip tests relying on eventd feature, which is disabled on slim image by https://github.com/sonic-net/sonic-buildimage/blob/202311/files/build_templates/init_cfg.json.j2#L63

Type of change

• [ ] Bug fix
• [ ] Testbed and Framework(new/improvement)
• [x] Test case(new/improvement)

Back port request

• [ ] 202012
• [ ] 202205
• [ ] 202305
• [x] 202311
• [x] 202405

Approach

What is the motivation for this PR?

How did you do it?

How did you verify/test it?

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation